Lantern-guard.



W. MOARTHUR.

LANTERN. GUARD.

APPLIOATION FILED D110. 4, 1911.

1,035,623. Patented Aug. 13, 1912.

l globe.

Unire STATES PATENT OFFICE.

WARREN MCARTHUR, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO R. E.DIETZ COMPANY, 0F NEW YORK, N. Y., AND ONE-HALF T0 C. T. HAMMANUFACTURING COMPANY, OF ROCHESTER, NEW YORK.

LANTERN-GUARD.

atcnted Aug. 13, 1912.

Serial No. 663,803.

T0 all whom it may concern.'

Be it known that I, wWARREN h/lonu'rnuu, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful lmprovement in Lantern-Guards, of which thefollowing is a speeiiication.

This invention has for its object to provide the wire guards of tubularlanterns with one or more lenses, usually called bulls eyes, in asimple, inexpensive and satisfactory manner.

The invention has reference more particularly to that class of guardswhich are secured to a base plate, usually perforated, upon which theglobe rests and which comprise guard wires rising from this plate andencircling the lower large portion of the This invention utilizes theseguard wires as holding devices for the lenses.

The figures on the accompanying sheet of drawings represent threedifferent embodi ments of the invention.

Figure 1 represents a rear elevation of a tubular lantern provided withthis iinproved guard. Fig. 2 is a detached perspective view of thisguard. Fig. 3 is a fragmentary sectional elevation of the lens andadjacent portions of the guard. Fig. ll is a vertical section in line L-4, Fig. Figs. 5 and 6 are detached perspective views illustratingmodified constructions of the guard.

Like reference characters refer to like parts in the several ligures.

A represents the" frame of a tubular lantern of any suitableconstruction.

B represents the base plate which supports the'globe C and which isconnected with the frame by a lifter shaft o of well known constructionor by any other suitable means which prevents rotary movement of theplate in the frame.

D D represent two guard wires or sections which are secured to the baseplate and rise therefrom on the front and rear sides of the lantern.Each of these wires extends approximately around one-half of the globe.

E E represent the lenses which are arranged on the front and rear sidesof the lantern, respectively, and are clamped between opposing uprightportions of the two guard sections at a proper height above the basesupport to be in line with the flame.

In Figs. 1-4, d represents the upper horizontal portion of each guardwire and al thc upright or ascending portion which extends from the baseplate to the horizontal portion. The upright portion is bent to followmore or less closely the circumference of the lens, which latter isprovided with a marginal groove for the reception of the guard wire.Preferably the upper part fl of the upright portion is bent to anapproximately horizontal position so that the wire bears against thelens by the return bend (Z3 at the top of the lens and by the bentportion d at the lower portion of th-e lens. This arrangement strainsthe upright portions of the wires and permits the two Sections of tl'ieguard to be separated as far as is necessary in inserting and removingthe globe without danger of releasing the lens. The two opposingsections of the guard are movable toward and from each other at the topby reason of the flexibility o'l' the parts and yield or spring as theglobe is inserted between or removed from the holding portions tl" ofthe horizontal portions (l of the guards. These holding portions bearagainstthe globe above the bulging part thereof and hold the globerelcasably on the base plate.

In the guard represented in Figs. 14, each upright lens-clamping portionrl is arranged on the same side of the lens on which the horizontalguard portion (l is arranged with which such upright portion connects,while in the guards represented in Figs. 5 and 6, the upright andhorizontal portions of the same section are arranged on opposite sidesof the lens. The latter arrangement causes the guard to tighten on thelens when the guard sections are spread apart in insei-ting or removingthe globe and thereby prevents the lens from becoming loosened by thataction of the guard but they render the guard somewhat more rigid thanthe guard represented in Figs. l-ll.

In the guard represented in Fig. 5, the horizontal portion f of eachguard section is connected with the upright portion f by an offsety orelbow portion f2 which increases the flexibility of the guard ascompared with the construction represented in Fig. (S, in which thehorizontal portion g is connected with the upright or lens-elamp ingportion g directly and without the intervention of such an offset. Thehorizontal portions f and g, respectively, of the guards represented inFigs. 5 and 6 are provided with globe holding portions 72, which arenarrow or rounded, while the globe holding portions Z4 of the guardrepresented in Figs. 141 are curved concentric with the globe, whichconstruction of these globeholding portions is preferred.

)In each of the guards herein shown the lens is clamped between the twosections of the guard which are flexible or springy and exert sufficientpressure upon the lens to hold the latter securely in position, while atthe same time the lens is readily removable. lWhen the guard is providedwith two lenses, one on the front and one on the rear side of thelantern, the lenses can be of different colors, for instance, the frontlens can be white and the rear lens red, and these lenses can be readilyexchanged for others, as circumstances may require.

l claim as my invention:

l. The combination with a globe plate, of a wire 'guard secured to thesame and comprising separate side sections, each encircling one side ofthe globe and having an upright member adapted to bear against one sideof a lens, the two guard sections being movable toward and from eachother and adapted to clamp a lens between their upright members,substantially as set forth.

2. The combination with a base plate, of a wire guard secured to thesame and comprising two sections, each composed of a horizontal portionwhich partly encircles the globe and an upright portion which isconstructed to engage against the edge of a lens, the two opposingupright portions clamping the lens between them, substantially as setforth.

3. A lantern guard comprising a base plate, opposing guard sect-ionssecured to said plate and lenses clamped between said sections on thefront and rear sides of the guard, said guard sections encircling theglobe and having upright portions on the front and rear sides of theguard between which portions the lenses are clamped, substantially asset forth.

4L. rl`he combination with a base plate, of a wire guard comprising twosections, each having a top portion which partially encircles the globeand an upright portion constructed to engage a lens which is clampedbetween the twosections, said top portion and said upright portion beingarranged on the same side of the lens, substantially as set forth.

5. The combination with a base plate, of a wire guard comprising twosections, each having a top portion which partially encircles the globeand an upright portion conF structed to engage a lens which is clampedbetween the two sections, said top portion being provided withglobe-holding portions which bear against the globe and hold the same onsaid plate,substantially as set forth.

fitness my hand in the presence of two subscribing witnesses.

l/VARREN MCARTHUR.

lVitnesses J os. LUDns, R. E. LiNDsrnoM.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

